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149 tools
Find out the resistance value with this resistor color code calculator! Just choose the resistor type, select the colors, and the tool will display the resistance, tolerance, and range on the spot.
The Solenoid Magnetic Field Calculator helps you find the magnetic field inside a long solenoid.
Learn the operating modes of one of the most important electronic components with our transistor biasing calculator.
The wattage to amperage calculator helps you calculate the voltage or current from power for both DC and AC circuits.
Coulombs to mC conversion
Coulombs to electron charge conversion
Ah to coulombs conversion
Gigavolts (GV) to volts (V) conversion
The 12 volt wire size calculator will assist you in choosing the proper wire size for your next house installation or battery appliance.
The 220 volt wire size calculator will assist you in choosing the proper wire size for your next house installation.
Use the buck converter calculator to find your circuit's duty cycle and inductance.
Use the capacitive reactance calculator whenever you want to find a capacitor's reactance in an AC circuit.
Use the capacitive transformerless power supply calculator to find your circuit's output voltage and input current.
Calculate the charge time of your capacitor for the five multiples of the time constant and more.
The capacitor size calculator gives you the capacitance required to handle a given voltage in an electric motor, considering a specific start-up energy.
Use the Coulomb's law calculator to determine the electrostatic force between two charged particles.
Use our DC Wire Size Calculator to know the wire size needed for your DC electric application.
The EIRP calculator helps you determine the effective isotropic radiated power, i.e., the actual power level radiated from an antenna.
The electric field calculator finds the magnitude of the electric field generated by a point charge.
The electrical mobility calculator explores the Einstein-Smoluchowski relation connecting the random motion of electrons in a wire to their mobility in the presence of a voltage difference.
With the excess electron calculator, you will learn how to find the number of electrons missing or in excess, which causes a given charge.
Learn how a transformer works and calculate accurately with our ideal voltage transformer calculator. Fast, reliable, and user-friendly
Use Omni's inductors in parallel calculator to work out the equivalent inductance in a parallel circuit.
Test your electrical power knowledge with this quick quiz on watts, voltage, current, and power factor!